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| Luz,Viviane Kopp da; Silveira,Solange Ferreira da Silveira; Fonseca,Gabriela Magalhães da; Groli,Eder Licieri; Figueiredo,Ricardo Garcia; Baretta,Diego; Kopp,Mauricio Marini; Magalhães Junior,Ariano Martins de; Maia,Luciano Carlos da; Oliveira,Antonio Costa de. |
| ABSTRACT The increase of yield potential in new rice (Oryza sativa L.) varieties has been a major challenge for genetic improvement. The generation of mutants, followed by their characterization, constitutes a great possibility to isolate and select genes and genotypes that present agronomic traits of interest. This study aimed to evaluate the effect of chemical mutagen ethyl methane sulphonate (EMS) on agronomic traits in 340 M3 families of rice derived from BRS Querência cultivar. Seeds from each family and the original genotype BRS Querência were sown in the experimental field, and the characters main panicle length, main panicle weight, main panicle grain weight, flag leaf width and plant height were evaluated. Data were subjected to analysis of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; Ethyl methane sulphonate; Mutagenic; Variability. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000100041 |
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| Silveira,Solange Ferreira da Silveira; Hawerroth,Maraisa Crestani; Luche,Henrique de Souza; Oliveira,Danyela de Cassia; Sousa,Rogério Oliveira de; Maia,Luciano Carlos da; Oliveira,Antonio Costa de. |
| A aveia branca (Avena sativa L.) é uma cultura que tem um papel importante no sistema de produção de grãos e integração lavoura-pecuária, no entanto, em algumas regiões brasileiras, o pleno estabelecimento e desenvolvimento dessa cultura, bem como o aumento de produtividade são inviabilizados pelo excesso de alumínio (Al) nos solos. A avaliação de caracteres de plântulas de aveia desenvolvidas sob cultivo hidropônico com adoção de solução nutritiva mínima pode ser eficiente para classificar genótipos sensíveis e tolerantes ao Al. Este trabalho objetivou avaliar o desempenho de 10 genótipos de aveia submetidos ao estresse por Al, baseando-se na análise da retomada do crescimento da raiz, com uso de solução mínima e identificando quais caracteres se mantêm... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avena sativa L.; Retomada do crescimento da raiz; Solução mínima. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400001 |
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| Luche,Henrique de Souza; Silva,José Antônio Gonzalez da; Nornberg,Rafael; Hawerroth,Maraisa Crestani; Silveira,Solange Ferreira da Silveira; Caetano,Vanderlei da Rosa; Santos,Rodrigo Lisboa; Figueiredo,Ricardo Garcia; Maia,Luciano Carlos da; Oliveira,Antônio Costa de. |
| ABSTRACT: The stay-green character has been related to greater stress tolerance and yield through longer activity of the photosynthetic apparatus. Association of this character with grain yield may be linked to a network of features other than the grain mass. This study aimed to shed light on the actual contribution of stay-green character in Brazilian wheats and the associations between grain yield components in different environmental conditions. The experiment was conducted in a randomized block design with three replications in the years 2003, 2004 and 2005. Sibling lines with and without the stay-green character were evaluated analyzing the phenotypic correlation and path analysis separately by year and maturity group. Under favorable growing... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Delayed senescence; Correlation; Path analysis. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100204 |
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| Silveira,Solange Ferreira da Silveira; Hawerroth,Maraisa Crestani; Oliveira,Danyela de Cássia da Silva; Woyann,Leomar Guilherme; Almeida,Helaine Claire Ferreira de; Luz,Viviane Kopp da; Thurow,Liamara; Silva,Raíssa Martins da; Gutkoski,Luiz Carlos; Maia,Luciano Carlos da; Oliveira,Antonio Costa de. |
| ABSTRACT Improvement of quality-related traits of grains is a constant concern in white oat breeding programs, which challenges breeders to understand their dynamics. The performance of different genetic combinations must be thoroughly evaluated to make high nutritional quality cultivars available. This study aimed to estimate the heterosis on F1 and F2 generations, vigor loss, due to inbreeding, and correlation between the grain chemical components to understand the dynamics of these traits, considering two segregating oat progenies. The populations Albasul × UPF 15 (population 1) and IAC 7 × UFRGS 19 (population 2) were developed. Both populations showed transgressive segregant individuals. The combination Albasul × UPF 15 provided significant heterosis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avena sativa; Functional food; Artificial hybridization; Correlation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000500471 |
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